# -*- coding: utf-8 -*-
"""
Created on Fri Jul 12 19:34:51 2019

@author: jingzl
"""

# MatchAyalysis.py

from random import random

def printInfo():
    print("这个程序模拟两个选手A和B的某种竞技比赛")
    print("程序运行需要A和B的能力值（以0到1之间的小数表示）")

def getInputs():
    a = eval(input("请输入选手A的能力值（0-1）："))
    b = eval(input("请输入选手B的能力值（0-1）："))
    n = eval(input("模拟比赛的场次："))
    return a, b, n

def simNGames( n, probA, probB ):
    winsA, winsB = 0, 0
    for i in range(n):
        scoreA, scoreB = simOneGame( probA, probB )
        if scoreA > scoreB:
            winsA += 1
        else:
            winsB += 1
    return winsA, winsB

def gameOver( a, b ):
    return a == 15 or b == 15

def simOneGame( probA, probB ):
    scoreA, scoreB = 0, 0
    serving = "A"
    while not gameOver( scoreA, scoreB ):
        if serving == "A" :
            if random() < probA:
                scoreA += 1
            else:
                serving = "B"
        else:
            if random() < probB:
                scoreB += 1
            else:
                serving = "A"
    return scoreA, scoreB

def printSummary( winsA, winsB ):
    n = winsA + winsB
    print("竞技分析开始，共模拟{}场比赛".format(n))
    print("选手A获胜{}场比赛，占比{:0.1%}".format( winsA, winsA/n ))
    print("选手B获胜{}场比赛，占比{:0.1%}".format( winsB, winsB/n ))
    
def main():
    printInfo()
    proA, proB, n = getInputs()
    winsA, winsB = simNGames( n, proA, proB )
    printSummary( winsA, winsB )

main()



0.46

